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Remediation method for heavy metal lead pollution in mine

A technology of lead pollution and heavy metals, applied in the restoration of polluted soil, etc., can solve the problems of low concentration of heavy metal plants in effective state, limit the popularization and application of phytoremediation, and small biomass of hyperaccumulator plants, so as to increase biodiversity, Low cost and improved ecological function

Inactive Publication Date: 2013-01-02
SICHUAN AGRI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Among the various remediation and treatment technologies for soil pollution, phytoremediation has the advantages of being able to be carried out at the polluted site, relatively low in cost, and can improve soil quality, but there are also problems such as low concentration of heavy metal plants in the soil and low biomass of hyperaccumulator plants. Small and other deficiencies limit the popularization and application of phytoremediation

Method used

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  • Remediation method for heavy metal lead pollution in mine
  • Remediation method for heavy metal lead pollution in mine
  • Remediation method for heavy metal lead pollution in mine

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The test adopts a potted simulation test. The soil is taken from the soil polluted by the tailings pond of the Tangjia lead-zinc mine in Hanyuan. The mixed plants or the same plants are planted on both sides of the pot along the diagonal of the pot, and placed randomly in the greenhouse. Among the plants, the single species of Nepal sorrel, the single species of ryegrass and the single species of white clover were used as controls, the mixed species of Nepal sorrel and ryegrass, the mixed species of Nepal sorrel and white clover, the mixed species of ryegrass, white clover and Nepal sorrel Seed, ryegrass and white clover mixed, a total of four mixed methods for treatment. The seeds of sorrel in Nepal are collected in the field, soaked and then broadcast; ryegrass and white clover are soaked in water for 6 hours before sowing, drained and broadcast. Sow 18 seeds per pot for single species of Nepal sorrel, 9 seeds per pot for mixed species of two plants, and 6 seeds per p...

Embodiment 2

[0040] The test site is located in Xiaoguan Village, Tang Township, Hanyuan County, Sichuan Province, China. The geographical coordinates are 102°38′16″~102°40′07″ east longitude and 29°24′39″~29°25′04″ north latitude. Mine waste polluted land, the field experiment adopts randomized block design, and the experiment has 4 treatments (mixed species of sorrel and ryegrass, mixed species of sorrel and white clover, mixed species of ryegrass and white clover and sorrel, ryegrass and white clover), repeated 3 times, a total of 12 field test plots, the plot area is 2×2m 2 , according to different treatments, after mixing the seeds uniformly in the same amount, use 20g / m 2 Sprinkle it into the soil with a certain density, and then cover with a thin layer of soil, preferably without exposing the seeds. The field management methods such as fertilization and sowing in the plots are the same, and they are treated according to conventional methods. 80 days after planting, samples were ta...

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Abstract

The invention discloses a remediation method for heavy metal lead pollution in a mine, which relates to the technical field of remediation of heavy metal pollution in an environment. According to the invention, Nepal garden sorrel and ryegrass, or Nepal garden sorrel and trifolium repens, or ryegrass and trifolium repens, or Nepal garden sorrel, ryegrass and trifolium repens are combinedly planted in soil contaminated by lead in a mine. The method provided by the invention has the advantages of low cost, strong operability, environment friendliness and capacity of effectively restoring heavy metal lead pollution in a mine.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal pollution in the environment, in particular to the field of remediation of heavy metal lead pollution in mines. . Background technique [0002] The development of lead-zinc mineral resources transports the underground ore to the surface, and changes the chemical composition and physical state of the mineral through mineral processing and smelting, so that heavy metals begin to be released and migrated to the ecological environment. Soil heavy metal pollution caused by the development and utilization of mineral resources From the geochemical chain and the food chain into the organism, it will bring serious hidden dangers to the food safety, ecological safety and even social harmony of the residents in the mine and its surrounding areas. Therefore, the ecological restoration of the polluted soil in the mining area is very important. [0003] Hanyuan County, Sichuan Province is ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 朱雪梅杨远祥邵继荣杨占彪杨海滨
Owner SICHUAN AGRI UNIV
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